Direct-contact feed-water heater for steam-boilers.



No. 865.842. PATENTED SEPT. 10, 1907.

G. WILKINSON. v DIRECT common? FEED WATER HEATER FOR STEAM BOILERS.

APPLICATION FILED DEC-11.1906.

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No 865,842. PATENIED SEPTQIO, 1907. G. WILKINSON. v

DIRECT CONTACT FEED WATER HEATER FOR STEAM BOILERS.

APPLICATION FILED DEC. 11.1906. I

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No. 865,842. PATENTED SEPT. 10, 1907.

G. WILKINSON. DIRBGT CONTACT FEED WATER HEATER FOR STEAMBOILERS.

APPLICATION FILED DEG.11. 1906.

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4-BHBETS-SHBET PATEN'IED SEPT. 10, 1907.

G. WILKINSON.

- DIRECT CONTACT FEED WATER HEATER FOR STEAM BOILERS.

APPLICATION FILED DBO. 11.1906.

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GEORGE WILKINSON, OF IIARROGATE, ENGLAND.

DIRECT-CONTACT FEED-WATER HEATER FOR STEAM-BOILERS.

Specification of Letters Patent.

Patented Sept. 10, 1907.

Application filed December 11,1906. Serial No. 347,300-

To all whom it may concern:

Be it known that I, GEORGE WILKINSON, residing at Beech Mount, Harrogate, in the county of York, England, engineer, have invented certain new and useful Improvements in and Relating to Direct-Contact Feed Water Heaters for Steanrloilers and the Like; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in feed water heaters oi the type in which the feed water is finally heated within the steam space of the boiler by direct contact with the steam.

. 1 My 1mproved apparatus may be used in cases where cold feed water is used, but I prefer to use in connection therewith feed water which has been previously raised in temperature by passing through an economizer, an exhaust steam feed heater, or other equivalent apparatus.

In the drawings, Figure 1 is an elevation, half in section, of one form of the apparatus. Figs. 2, 3, and 4 are respectively elevation, section, and plan of the preferred iorm adapted to a Lancashire boiler. Fig. 5 is spread over two sheets, one-hali'on each sheet, and each half is marked Fig. 5. Fig. 5 shows a marine boiler having my invention applied thereto.

Letter a indicates the ordinary feed water pipe, b the (lo-aerating box which is divided into upper and lower compartments 0 and d, the upper 0, being intended to receive the feed water which flows over the circular opening into the bottom half d the air and gases being liberated from the water and escaping to the atmosphere through the hole c (Fig. 3) to which a suitable pipe and external control valve is fitted, or by the pipe and valve 0 (Fig. 5). The lower compartment d opens into the receiving vessel f, over the edge of which the feed water trickles, falling on to the inclined surface of a ring 7 (Fig. 1) surrounding the vessel f, thence into a dish or tray h, and through openings 1 therein on to a conical plate 9', and soon over a series of dishes and conical plates (the number depending upon the vertical space available) until it is conducted into the settling tank k. From this tank it overflows into the enveloping chamber Z, and down the stand pipe m to the bottom of the boiler, near to the blow-off pipe a Letter p indicates the thermometer, and q (Fig. 2) bolts by which the lower receptacle 1 is carried from the top box b, which is bolted to the shell of the boiler 1. The apparatus may, however, be supported by the longitudinal stays of the boiler as shown in Fig. 5.

In order to maintain the water seal between the compartment d and receiving vessel f as previously mentioned, one or more equalizing pipes which for convenience I designate breathing pipes s maybe placed in communication with the top of the said compartment (1, the other ends'oi these being open to the steam in the boiler. In Fig. 4, four of these pipes are shown spaced around the box, but three, six, or other number may be employed.

I claim as my invention:

1. In a feed-water heater, the combination, with a water inlet pipe, or a tie-aerating box connected with the said pipe and arranged inside the boiler, said box having two superposed compartments and an air outlet from the upper compartment, a vessel forming a water seal with the lower compartment, a receiving tank for the heated water arranged below the said vessel, and a delivery pipe connected to the said tank and discharging into the Water space of the boiler.

In a feed-water heater, the combination, with a water inlet pipe, of a de-aerating box connected with the said pipe and arranged inside the boiler, said box having two superposed compartments and an air outlet from the upper compartment, a vessel forming a water seal with the lower compartment. a receiving tank for the heated water arranged below the said vessel, a series of dishes having holes near their centers and plates under the said holes, said dishes and plates being arranged alternately and between the said vessel and tank, and a delivery pipe connected to the said tank and discharging into the water space of the boiler. l

3. In a feed-water heater, the combination, with a vessel arranged in the upper part of a boiler and provided with means for supplying it with feed-water, of a series of dishes having holes near their centers and plates under the said. holes, said dishes and plates being arranged alternately below the said vessel in the steam space of the boiler and operating to heat the feed-water as it passes over them from the said vessel.

4. In direct contact feed water heaters for steam boilers and the like, the combination with a receiving vessel (1) from which the feed water descends in a finely divided state in contact with the steam into a settling tank (In), of inclined paths for the said water formed by one 01' more dishes or trays (h) having annular openings therein, and one or more conical plates (7') for purposes described 5. In direct contact feed water heaters for steam boilers and the like, a de-aerating box (1)) delivering the feed water to a receiving vessel (7) so arranged that the Water in the said vessel 1 forms a water-seal around the outlet of the deaerating box, substantially as described.

6. In direct contact feed Water heaters for steam boilers and the like, the combination with a receiving vessel (7) and settling tank (It), both contained within the boiler, of a receiving tank (I) and pipe (m) conveying the feed water from the said settling tank to a point near the bottom of the water space of the boiler, and preferably over or near the blow-off block (11.) thereof.

In testimony whereof I afiix my signature, in presence of two witnesses.

' GEORGE WILKINSON.

Witnesses JOSEPH RIDSVALE, TI'IOMAS E. Con. 

